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Crystallization and Growth Morphology of Barium Titanate and Fresnoite from a Glass with the Composition 20.1Na2O•23.1BaO•23TiO2•9.8B2O3•21SiO2•3Al2O3

Abstract

Abstract A glass with the composition 20.1Na2O•23.1BaO•23TiO2•9.8B2O3•21SiO2•3Al2O3 (in mol%) was synthesized using the traditional glass melting technique. Its thermal properties were characterized by differential thermal analysis (DTA) and appropriate time-temperature schedules were applied in order to prepare glass-ceramics containing barium titanate. Analysis by X-ray diffraction (XRD) showed the formation of cubic barium titanate and fresnoite for the annealing temperature of 650 °C and times t ≥ 3h, while annealing for 1 h resulted in the sole crystallization of barium titanate. Supplying longer crystallization times resulted in the additional formation of increasing fresnoite concentrations. The crystallization behavior of the glass is characterized using electron microscopic techniques, i.e. energy dispersive X-ray spectroscopy (EDXS) and electron backscatter diffraction (EBSD) which reveal the simultaneous growth of fine, densely-branched barium titanate and fresnoite crystals.

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Publication details

The article was accepted on 11 Sep 2017 and first published on 14 Sep 2017


Article type: Paper
DOI: 10.1039/C7CE01339F
Citation: CrystEngComm, 2017, Accepted Manuscript
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    Crystallization and Growth Morphology of Barium Titanate and Fresnoite from a Glass with the Composition 20.1Na2O•23.1BaO•23TiO2•9.8B2O3•21SiO2•3Al2O3

    R. Harizanova, W. Wisniewski, G. Avdeev and C. Rüssel, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE01339F

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